an investigation of the mechanical damping of ductile iron

Automotive Components: Ductile Iron vs. Grey Iron

Ductile iron boasts tremendous tensile strength. Certainly, it stands up better in tension than other cast irons, with its strongest type (to ASTM A536) recording a tensile strength of 827 N/mm2. For context, the toughest grey iron equivalent (SAE G4000) can only muster 276 N/mm2.

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An Investigation on the Suitability of Surface Engineered ...

An Investigation on the Suitability of Surface Engineered Austempered Ductile Iron as a Gear Material ... relatively poor damping characteristics and a comparatively high coefficient of friction, ... Austempered ductile iron gears may have mechanical properties that are comparable to those of

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Metallographic investigation of Nd: YAG laser processed ...

10th International Symposium on the Science and Processing of Cast Iron – SPCI10 Metallographic investigation of Nd: YAG laser processed ductile iron surfaces A. Nofal, H. El-Gazzar and M. Ibrahim Department of Foundry Technology, Central Metallurgical R&D Institute, Cairo, Egypt

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Gray Iron – Iron Casting Research Institute, Inc.

 · [26] Zlatin, Norman, "The Machinability of an Unalloyed and an Alloyed Gray Iron," Gray and Ductile Iron News, March 1965. pp. 5-14. [27] Lamb, A. D., "Material and Technique Factors in the Machining of Iron Castings, Gray and Ductile Iron News, Part I, …

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EFFECT OF HEAT TREATMENT ON MECHANICAL PROPERTIES …

mechanical properties are determined by the ductile iron matrix. The importance of matrix in controlling mechanical properties is emphasized by the use of matrix names to designate the following types of ductile iron. Austenitic Ductile Iron. Ferritic Ductile Iron. Ferritic Pearlitic Ductile Iron. Pearlitic Ductile Iron.

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An investigation of the mechanical damping of ductile iron ...

 · The magnitude of the magnetomechanical damping was much larger than that due to dislocation motion. An additional goal of the investigation was to determine if any correlation existed between the measured mechanical damping and the fracture toughness of the ductile iron materials; no correlation was found.

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INVESTIGATION OF DUCTILE IRON IN MOLD TREATMENT …

Ductile iron was first developed in 1943 and it is widely used in automotive industry. The difference between cast iron and ductile iron is due to the presence of spheroid graphite in the matrix of ductile iron which is not found in brittle cast iron. Ductile iron possesses higher ductility and tensile strength than in cast iron.

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DYNAMIC FRACTURE TOUGHNESS BEHAVIOUR OF DUCTILE …

In Germany, ductile cast iron (DCI) has been used for heavy-sectioned casks for radioactive materials for more than 20 years. New developments in cask design and efforts to extend the application limits require further investiga-tions and the improvement of the BAM safety assessment concept for nodular cast iron containers [1,2] originally estab-

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An investigation of the mechanical damping of ductile iron ...

The magnitude of the magnetomechanical damping was much larger than that due to dislocation motion. An additional goal of the investigation was to determine if any correlation existed between the measured mechanical damping and the fracture toughness of the ductile iron materials; no correlation was found. Download to read the full article text.

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ASSESSMENT ON MECHANICAL PROPERTIES OF DUCTILE CAST IRON ...

KEYWORDS: Solidification Cooling Rate, SG Iron, Mechanical Properties INTRODUCTION Cast iron has a long and illustrious history and the five types of cast iron produced commercially today are i) White cast iron ii) Malleable cast iron iii) Grey cast iron iv) Spheroidal graphite iron or ductile iron v) Compacted cast iron.

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Ductile Iron | Metals Handbook Desk Edition, 2nd Ed ...

The article also talks about the effects of composition, graphite shape, and section size on the mechanical properties of ductile iron. Tables and graphs provide helpful information on the tensile properties, compressive properties, torsional properties, damping capacity, impact properties, fracture toughness, fatigue strength, and elevated ...

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Ductile Iron for Open Gearing – A Current Perspective ...

 · Ductile iron may not be the highest rated material for all of these parameters taken individually, but its overall combination of the above properties makes it easy to understand why ductile iron is a reliable solution for open gears, large or small. References. 1. Ductile Iron Data for Design Engineers; Rio Tinto Iron & Titanium, 1990-1998 2.

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THE INFLUENCE OF COPPER ELEMENT UPON …

Ductile cast iron),During the solidification most of the carbon forms as graphite spheroids which exert only a minor influence on the mechanical properties in contrast to the effect of flake graphite in gray cast iron.Ductile cast iron is a family of alloys which combines the principle advantages of gray irons (Low

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Mechanical Properties of Gray Iron

Home > Tips and Facts > Mechanical Properties of Gray Iron > Damping Capacity . Mechanical Properties of Gray Iron - Damping Capacity . The relative ability of a material to absorb vibration is evaluated as its damping capacity.The quelling of vibration by converting the mechanical energy into heat can be very important in structures and in devices with moving parts.

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The Effects of Molybdenum and Manganese on the …

Ductile iron is one such material. A lot of research has been done on this material and focus has been set improving mechanical on properties using adequate heat treatment and alloying elements. When ductile iron subjected to an isothermal is heat treatment, known as austempering" ", Austempered Ductile Iron (ADI)is produced, [1].

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(PDF) Austempered ductile iron : Processing and mechanical ...

Ductile iron is characterized by having all of its graphite occurs in microscopic spheroids. Although this graphite constitutes about 10% by volume of ductile iron, its compact spherical shape minimizes the effect on mechanical properties [8]. 2.1.4.2. Ferrite This is the purest iron phase in a cast iron.

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Thin Wall Ductile Iron Castings: Technological Aspects

ductile iron, providing similar values of strength (Fig. 1). The exception is ADI, which considerably exceeds the other alloys. It follows that the ductile iron can be as light as aluminum alloy. In some cases (eg. internal combustion engine, housing of catalyst) important is influence the temperature on mechanical properties.

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Metallographic investigation of Nd: YAG laser processed ...

The ductile iron and ADI used throughout this work was melted in 100 kg MF induction furnace to reach the nominal chemical composition of 3.6%C, 2%Si, 0.3%Mn, 0.01%S. 10 th International Symposium on the Science and Processing of Cast Iron – SPCI10

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MECHANICAL PROPERTY INVESTIGATION OF HARDENED …

ductile iron 1.2.Birth of ductile iron 1.3.Production of ductile iron 1.4 emical 1.5.Different micro-constituents in ductile iron 1.6.Types of ductile iron 1.7.Effect of alloying on matrix structure 1.8.Mechanical properties of ductile iron 1.9.Factors affecting Properties of Ductile Iron 1.10. Heat Treatment of Ductile Iron 1.11.

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Damping Properties of Selected Steels and Cast Irons

house Electric Corp., has good damping and excellent mechanical properties; how­ ... PURPOSE OF THIS INVESTIGATION This investigation was conducted as part of the Bureau''s research effort to C-0nserve resources and increase produc­ ... Ductile iron cast­ ...

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ACTA METALLURGICA SLOVACA

acta metallurgica slovaca 2021, vol. 27, no. 2, 87-93 doi: 10.36547/ams.27.2.791 87 research paper mechanical damping characteristics of ductile and grey

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Effect of austemperig on ductile iron

 · •Therefore, an attempt has been made in the present work to study the effect of austempering temperature and time on the mechanical properties of austempered ductile iron such as tensile strength, % elongation, hardness and impact toughness by carrying out austempering treatment of ductile iron at 350°C, 300°C, and 250°C for 0.5hr, 1hr, 1 ...

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EFFECT OF HEAT TREATMENT PROCESSES ON DUCTILE CAST IRON ...

Ductile cast iron is the most important material which is used in many industrial and automobile applications. In the present work the effects of austempering, normalizing and annealing heat treatment processes on Ductile Iron specimen are studied. Various temperatures and holding times are used in the present work. Maximum hardness is observed in austempered (at 860oC) ductile iron specimen ...

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Technological heredity when roller burnishing of ductile ...

_____ good mechanical properties, high vibration damping ∗Author ... investigation. It is widely used in mechanical ... free machining properties without the addition of lead, bismuth, sulfur or phosphorus. The 65-45-12 ductile iron grade has a mostly ferritic matrix with approximately 25% (max) pearlite. The mechanical ...

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Abrasive Wear Studies on Austempered Ductile Iron Castings

1Research scholar, 2Professor, Department of Mechanical Engineering, MSRIT Bangalore-560054 3Principal, R R Institute of Technology, Bangalore ... thermal conductivity and damping ... In the present investigation IS400/15 grade ductile iron castings were subjected to standard austempering heat

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of an Heat-treated Ductile Iron

Nodular cast iron (NCI) is a construction material widely used in many demanding technical applications, [1]. Its mechanical and fatigue properties can be significantly improved by a post-cast heat treatment, such as austempering. Austempered ductile iron (ADI), the result of an austempering treatment, represents the top

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PUSH-PULL FATIGUE TESTS ON DUCTILE AND VERMICULAR …

Ductile cast iron offers incredibly high mechanical ... Damping Capacity 1 0.35 0.22 Hardness BHN 190 230 235 2 Methods 2.1 Basic information ... this investigation the stress-life method is applied. In [20] the effects of graphite shape on thermal

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INVESTIGATION OF DUCTILE IRON ''SANDWICH'' …

General about ductile iron Type of treatment to convert cast iron to ductile iron Sandwich treatment 3 4 5 1.6 Objective 6 1.7 1.8 Scope 1.7.1 Variable of pattern size range from 0.5kg-1.5kg 1.7.2 Variable of percentage ferrosilicon magnesium range from 0.2%-0.6% 1.7.3 Fixed type of pocket, which is normal pocket. Problem statement 7 7

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Investigation on Optimization of Machining Parameters on …

Investigation on Optimization of Machining ... then ductile iron with the cast iron is an outdated and widely held ... machinability and damping properties. Unfortunately these properties of SG iron are not widely well known because of the misconception about its brittle behavior.

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Numerical modal analysis for vibration-damping properties ...

vibration-damping properties of materials, ductile cast iron - graphitic cast iron with the spherical shape of graphite (ductile cast iron). Investigation is focused on its mechanical properties, chemical composition and microstructure, which are necessary as input parameters for computational modeling and numerical analysis. The vibration

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ASTM International

Investigation into the Flow-Blocking Ability of a Novel Magneto-Rheological Damper Unit. ... Verification of Thin-Wall Ductile Iron Test Methodology. ... Temperature Dependence of Dynamic Young''s Modulus and Mechanical Damping in a Nextel Fiber-Reinforced Glass Composite.

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Investigation of Phase Transformations in Ductile Cast Iron

Studies were carried out on commercial ductile iron of the EN-GJS-450-10 (PN-EN 1563: 2000) grade. The cast iron is used for slot grids operating in a linear water disposal system. Table 1 gives the chemical composition of cast iron. In as-cast condition, the cast iron matrix is ferritic with spheroidal graphite.

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